function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Canu, F. & Bassler, R. S.', 1],
    ['Cook, P. L. & Bock, P. E.', 1],
    ['Figuerola, Blanca & Gordon, Dennis P. & Cristobo, Javier', 1],
    ['Harmelin, Jean-Georges', 1],
    ['Martino, Emanuela Di & Taylor, Paul D.', 1],
    ['Ramalho, Laís V. & Taylor, Paul D. & Moraes, Fernando Coreixas', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=6)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);